I wonder in the vanilla game is there a follower who is primarily a healer and behaves like one? I'd like to be the tank and my follower to stay behind and heal me instead of fighting. Something like a Tank / Healer duo is this possible in vanilla?

I'm also confused about followers knowledge of potions, do they use them actively in combat? I gave Lydia and Annekke lots of potions (healing, fortify health, poison, increase one handed / two handed / marksman, ect...) They don't use them! They prefer to kneel and surrender in combat instead of using my freaking potions, is this a bug or as intended?

I fear it isn't available. Maybe a mod should do the trick